Global Patent Index - EP 2728306 A1

EP 2728306 A1 20140507 - Method and device for determining three-dimensional coordinates of an object

Title (en)

Method and device for determining three-dimensional coordinates of an object

Title (de)

Verfahren und Vorrichtung zur Bestimmung dreidimensionaler Koordinaten eines Objekts

Title (fr)

Procédé et dispositif pour déterminer les coordonnées tridimensionnelles d'un objet

Publication

EP 2728306 A1 20140507 (EN)

Application

EP 12191195 A 20121105

Priority

EP 12191195 A 20121105

Abstract (en)

The invention relates to an optical measuring device (1) for determining 3D coordinates of an object (2), comprising a projector device (11) for illuminating the object (2) with at least one predefined pattern (10); at least one PSA camera (12, 12') for capturing a 2D image (120) of the pattern (10) as reflected from the object (2); computing means (18) for measuring a sequence of brightness values (180, 180', 180") of at least one 2D image point (121, 121') from the 2D images (120, 120'); and calculating a 3D coordinate (21) of an object point (20) which is correlated with the measured sequence of brightness values (180, 180', 180") of the 2D image point (121, 121'), characterized by a range camera (13) for capturing at least one range image (133) of the object (2), the range image (133) including distance information (133') of the object (2) for the dissolution of ambiguity in calculating the 3D coordinate. The invention also relates to a method for determining 3D coordinates of an object (2) by said optical measuring device (1), the method comprising a structured-light measurement and capturing with a range camera (13) at least one range image (133) of the object (2), the range image (133) including distance information (133') of a plurality of points of the object (2).

IPC 8 full level

G01B 11/25 (2006.01); G01C 15/00 (2006.01); G01S 17/894 (2020.01)

CPC (source: EP US)

G01B 11/2545 (2013.01 - EP US); G01C 15/00 (2013.01 - EP US); G01S 17/894 (2020.01 - EP US)

Citation (applicant)

Citation (search report)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

EP 2728306 A1 20140507; CN 104769389 A 20150708; CN 104769389 B 20180706; EP 2914928 A1 20150909; EP 2914928 B1 20190821; US 10041788 B2 20180807; US 2015292876 A1 20151015; WO 2014068073 A1 20140508

DOCDB simple family (application)

EP 12191195 A 20121105; CN 201380057774 A 20131031; EP 13786224 A 20131031; EP 2013072845 W 20131031; US 201314440642 A 20131031